Ohto Ballpoint Pen GS01 Orange

The Ohto GS01 „Grand Standard 01” is a sleek aluminium ballpoint pen from Japan with a twist mechanism – completely without a side push button. The included Soft Ink refill works with an oil-based ink with low adhesion that feels fluid and smooth on paper. The orange barrel made of anodised aluminium lies cool and grippy in the hand, with a weight that supports precision when writing.

Highlights

• Aluminium barrel in vibrant orange – anodised, with a matte, grippy surface that doesn't tire even during extended writing sessions
• Twist mechanism instead of push button – the refill extends and retracts cleanly and play-free, without the pen slipping in your hand
• Soft Ink refill PS-107NP, 0.7 mm black – oil-based ink with low adhesion for consistent, soft writing without scratching
• Line width responds to writing angle and pressure – lighter angle produces finer lines; stronger pressure creates a wider line
• Ink capacity for approximately 2,000 metres – one of the most generous ink supplies in this pen class
• Compatible with G2 large refills – enables easy switching to quick-drying or coloured alternatives
• Not archival – the oil-based Soft Ink is suitable for daily writing, not for documents requiring permanent records

Application & Tips

• On smooth, calendered paper, the Soft Ink refill delivers its full writing feel – rolling resistance is minimal, and the line is uniformly rich
• Those who prefer a wider, more expressive line should hold the pen at a shallower angle; for precise, fine writing simply use a steeper angle
• As a G2-compatible pen, the GS01 can easily be fitted with a quick-drying gel refill or an oil-based ballpoint refill – ideal for left-handers or bullet journal pages with large colour areas
• The twist mechanism makes the GS01 pocket-friendly: no accidentally extended refill in your pen case or jacket pocket
• The orange acts as an identification colour in your pen case – particularly practical when multiple pens need to be at hand quickly

For Ballpoint Pen Enthusiasts

The GS01 is the direct successor to the Ohto Horizon and shares its core philosophy: sleek aluminium, precise mechanics, carefully selected refill. Ohto's Soft Ink uses very low surface adhesion – this means the ink shears faster when the ball point contacts the paper than with conventional ballpoint refills. The result is a writing feel that comes closer to a gel pen than a classic ballpoint, while offering significantly longer ink range. The G2 compatibility makes the GS01 a platform pen: if you replace your refill with a TWSBI writing refill or another G2-compatible refill, you fundamentally change the pen's character while retaining the weight and balance of the aluminium barrel.

Technical Specifications